/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright ( C ) 2007 - 2009 Michal Simek < monstr @ monstr . eu >
* Copyright ( C ) 2007 - 2009 PetaLogix
* Copyright ( C ) 2007 John Williams < john . williams @ petalogix . com >
* based on v850 version which was
* Copyright ( C ) 2001 , 02 , 03 NEC Electronics Corporation
* Copyright ( C ) 2001 , 02 , 03 Miles Bader < miles @ gnu . org >
*/
#ifndef _ASM_MICROBLAZE_CACHEFLUSH_H
#define _ASM_MICROBLAZE_CACHEFLUSH_H
/* Somebody depends on this; sigh... */
#include <linux/mm.h>
#include <linux/io.h>
/* Look at Documentation/core-api/cachetlb.rst */
/*
* Cache handling functions .
* Microblaze has a write - through data cache , meaning that the data cache
* never needs to be flushed . The only flushing operations that are
* implemented are to invalidate the instruction cache . These are called
* after loading a user application into memory , we must invalidate the
* instruction cache to make sure we don ' t fetch old , bad code .
*/
/* struct cache, d=dcache, i=icache, fl = flush, iv = invalidate,
* suffix r = range */
struct scache {
/* icache */
void (*ie)(void ); /* enable */
void (*id)(void ); /* disable */
void (*ifl)(void ); /* flush */
void (*iflr)(unsigned long a, unsigned long b);
void (*iin)(void ); /* invalidate */
void (*iinr)(unsigned long a, unsigned long b);
/* dcache */
void (*de)(void ); /* enable */
void (*dd)(void ); /* disable */
void (*dfl)(void ); /* flush */
void (*dflr)(unsigned long a, unsigned long b);
void (*din)(void ); /* invalidate */
void (*dinr)(unsigned long a, unsigned long b);
};
/* microblaze cache */
extern struct scache *mbc;
void microblaze_cache_init(void );
#define enable_icache() mbc->ie();
#define disable_icache() mbc->id();
#define flush_icache() mbc->ifl();
#define flush_icache_range(start, end) mbc->iflr(start, end);
#define invalidate_icache() mbc->iin();
#define invalidate_icache_range(start, end) mbc->iinr(start, end);
#define enable_dcache() mbc->de();
#define disable_dcache() mbc->dd();
/* FIXME for LL-temac driver */
#define invalidate_dcache() mbc->din();
#define invalidate_dcache_range(start, end) mbc->dinr(start, end);
#define flush_dcache() mbc->dfl();
#define flush_dcache_range(start, end) mbc->dflr(start, end);
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
/* MS: We have to implement it because of rootfs-jffs2 issue on WB */
#define flush_dcache_page(page) \
do { \
unsigned long addr = (unsigned long ) page_address(page); /* virtual */ \
addr = (u32)virt_to_phys((void *)addr); \
flush_dcache_range((unsigned ) (addr), (unsigned ) (addr) + PAGE_SIZE); \
} while (0 );
static inline void flush_dcache_folio(struct folio *folio)
{
unsigned long addr = folio_pfn(folio) << PAGE_SHIFT;
flush_dcache_range(addr, addr + folio_size(folio));
}
#define flush_dcache_folio flush_dcache_folio
#define flush_cache_page(vma, vmaddr, pfn) \
flush_dcache_range(pfn << PAGE_SHIFT, (pfn << PAGE_SHIFT) + PAGE_SIZE);
static inline void copy_to_user_page(struct vm_area_struct *vma,
struct page *page, unsigned long vaddr,
void *dst, void *src, int len)
{
u32 addr = virt_to_phys(dst);
memcpy(dst, src, len);
if (vma->vm_flags & VM_EXEC) {
invalidate_icache_range(addr, addr + PAGE_SIZE);
flush_dcache_range(addr, addr + PAGE_SIZE);
}
}
#define copy_to_user_page copy_to_user_page
#include <asm -generic/cacheflush.h>
#endif /* _ASM_MICROBLAZE_CACHEFLUSH_H */
Messung V0.5 in Prozent C=81 H=92 G=86
¤ Diese beiden folgenden Angebotsgruppen bietet das Unternehmen0.10Angebot
(Wie Sie bei der Firma Beratungs- und Dienstleistungen beauftragen können 2026-10-01)
¤
*Eine klare Vorstellung vom Zielzustand